Process of drying raw peat and the like.



H. BRUNE 5L H HORST, PROCESS or DRYING RAW FEAT AND mg mg,

APPLICATION FILED APR. 8, 1915 Patented June 15, 1915.

' @EFEFCE HEINRICH BRU'NE AND HEINRICH HYQRST, OF DORTMUND, GERMANY, ASSIGNORS TO NASSPRESS-GESELLSCHAFT MIT BISCHRENKTER HAFTUNG, 0F WIESBADEN,.GER-

MANY, A CORPORATION.

raoonss or partner naw rear nun rn n LIKE. I

masses.

Specification ofletters Patent. Patented 11119 1 3 5, 1915.

Application file'd April 8, 1915. Serial No. 30,041.

To all whom it may concern; j

Be it known that we, Hemmer; BRUNE and Hammer; Hons'r, both citizens of the Germany Empire, and resident of Dortmund, Germany, have invented new and useful Improvements in the Process of Dr ing Raw Peat and the like, of which the followingis a specification. e

The object of the present invention is to provide an improved process for drying raw peat and similar vegetable materials of a fibrous ,nature by pressureandwith the use of drying admixtures.

It is customary to add to the ravv peat, or other material to be dried, ashes, sand, gravel, small coke, small peat and the like, but these admixtures have been, thoroughly mixed with the material to be dried by means of suitable mixing and kneading apparatus. This has been for the purpose of shortening the time required to press the mixture and for making it possible to re move a. greater quantity of moisture from the material to be dried.

We have discovered that the Wet mate- I rial, or the material to be dried, and the admixture need be subjected to pressure for a much shorter interval and the wet material more efiiciently deprived of its moisture, if the admixture is not. intimately mixed 'with the material to be dried and if all kneadingoperations are dispensed with.

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According to the present invention, the improved process consists in its referred form in cutting the material to e dried, such for instance as raw peat, itito small particles without crushing or squeezing the fibers thereof, or, in other words, while preserving its fibers in an uncruslied condition. The admixture in a comminuted form is then added to the finely out raw peat, or vice versa and the two constituents then subjected to pressure to extrude the moisture from the raw peat, care being taken during the pressing operation. not to so disturb the particles of either the raw peat or the ad-- mixture as to interfere with the formation of the small canals and passages through which the water passes and care being taken to maintain the constituents in a loosely mixed and flocculent condition until the pressing operation.

This invention is illustrated in the accompanymg drawing for the purpose of showmg one i'iorm of apparatus suitablefor carrylng out the process, but it will be understood that any suitable type of apparatus ma be employed.

n the drawing :Figure 1 is a more or less diagrammatic plan view of the apparattle; and Fig. 2 is a partial sectional view,

1 taken on the line 2-2 of Fig.1.

The admixture, such for instance as comminuted dry peat, is supplied from a hopper 4 on to an endless belt conveyor 3, the admixture being delivered to the conveyor in a thin layer, as indicated in Fig. 2. The raw peat is delivered to the conveyer-3 in the fbrm of a second layer positioned upon the liver of the dry admixture. This is accom- ,ished by passing the raw peat between stitable cutters 1 and 2, Whose purpose is to Gilt the peat into small particles without crushing its fibers. he cut peat is then discharged directly on 0 thelayer of the dry aldniixthf'e resting upon the conveyor 3. Due tip the fact that the raw peat is delivered on tsp of the layer of dry material, there is little possibility of the rave peat adhering to the conveyor. 7

The conveyor 3 moves the twolayers of material to a suitable chute 5, the purpose of which is to deliver the raw peat and the admixture to 'a mixing drum 6 having posi tioned therein, a conveyor 7. The drum 6 rotates with the conveyor 7, so that the raw peat and the admixture are conveyed through the drum, Without cf'ushing the fibers or compressing portions of the mix ture. The drumfi discharges into an elevator 8, which, in turn, discharges into the press 9.

-When' the raw peat and the dried mixture are pressed, care should be taken that the The loosely mixed condition of the peat and the admixture permits the interval during which the two are subjected to pressure to be greatly reduced and permits a greater quantity of moisture vto be extraded from the Wet material than has been 6 presentprocess, the result-in m [The process of dryin rew i int What we claim is n at and simiial wet materials, WhlC consists in cutting .thewet material into small particles while preset its fibers in an uncrushed condih m, add

' .to the out wet material a H edmixtnre, maintaining the wet-i nzterisi end admixture in a. loosely mixed condition, and thenpressing the wet material and admixture, for the purpose de scribed. That We claim the foregoing as our inven- 20 tion, we have signed our names in presence of two witnesses, this 5th day of Januai'gf' 1915. HEINRICH BRUNE.

HEINRICH HORST.

.Witnesses for Heinrich Brune:

HELENVNU'FER, ALBERT NUFERJ I Witnesses for Heinrich Horst:

WOLDEMAR HAUPT, HENRY HAsPeR. 

